Abstract
Improving quality and quantity of forage harvested from poor condition, subirrigated hay meadows in the Nebraska Sand Hills is critical to the winter forage reserve of livestock producers. Alfalfa (Medicago sativa L.) is the most commonly used legume for meadow improvement. Broadcast seeding (11.2 kg/ha) was compared to sod seeding (11.2 kg/ha) as a method to introduce alfalfa into an alkaline subirrigated meadow (Fluvaquentic Haplustolls). Before seeding, the study area received 78.5 kg/ha phosphorous. Paraquat (0.29 kg/ha) was applied to one-half of the area to suppress plant competition and provide qualitative information on treatment consistency across a range of sod competition. Lo-till sod seeding was accomplished with a power tillage seeder. Seedling density was determined in spring the following year. Broadcast alfalfa had a greater seedling density than sod-seeded alfalfa (38.4 and 19.1 plants/m2, respectively, p=.09). Apparently, paraquat had no effect on seedling establishment and tended to reduce total yield. Yields the year of seeding, using a two harvest scheme, were greater for broadcast compared to sod-seeded alfalfa (p=.02). However, there was no significant difference between yields of broadcast alfalfa and control.
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Claims 5
Claim · model-written summary
Broadcast alfalfa had a greater seedling density than sod-seeded alfalfa.
- Taxon
- Alfalfa
Medicago sativat0 - Treatment
- Broadcast alfalfae1
- Outcome
- seedling densitye1
- Direction
- greatere1
- Value
- 38.4 and 19.1 plants/m2e1
- Qualifier
- p=.09e1
- Comparator
- sod-seeded alfalfae1
- Setting
- Nebraska Sand Hillse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“subirrigated hay meadows in the Nebraska Sand Hills”
e1“Broadcast alfalfa had a greater seedling density than sod-seeded alfalfa (38.4 and 19.1 plants/m2, respectively, p=.09)”
Claim · model-written summary
Paraquat had no effect on alfalfa seedling establishment.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- paraquate2
- Outcome
- seedling establishmente2
- Direction
- no effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e2“Apparently, paraquat had no effect on seedling establishment and tended to reduce total yield”
Claim · model-written summary
Paraquat tended to reduce total alfalfa yield.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- paraquate2
- Outcome
- total yielde2
- Direction
- tended to reducee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e2“Apparently, paraquat had no effect on seedling establishment and tended to reduce total yield”
Claim · model-written summary
Broadcast alfalfa gave greater yields than sod-seeded alfalfa in the year of seeding.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- broadcaste3
- Outcome
- Yieldse3
- Direction
- greatere3
- Qualifier
- p=.02e3
- Comparator
- sod-seeded alfalfae3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e3“Yields the year of seeding, using a two harvest scheme, were greater for broadcast compared to sod-seeded alfalfa (p=.02)”
Claim · model-written summary
Broadcast alfalfa yields did not differ significantly from the control.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- broadcast alfalfae4
- Outcome
- yieldse4
- Direction
- no significant differencee4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e4“However, there was no significant difference between yields of broadcast alfalfa and control”
The same questions in other papers
paraquat · yield · Medicago sativa (alfalfa)Results differ
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- positive
- positive
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See all 11 papers →paraquat · growth · Medicago sativa (alfalfa)Results agree
3 papers in the same direction as this paper
- no effect
- negative
- no effect
transplanting · yield · Medicago sativa (alfalfa)Positive and negative results
10 papers in the same direction as this paper · 3 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- no effect
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See all 15 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.